Benq Monitor GL2450 not working at all.

Mar 22, 2018
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Recently purchased a new monitor and there seems to be no display whatsoever coming from either the ports. Power supply is fine but I cant access the menu it mentions about in the instructions and I have tried HDMI, DVI and VGA cables all connected into the back of the computer where the motherboard is and it just just states "No signal detected". Even tried just the PS4 and seems to be nothing so the issue is primarily down to the monitor.